GetPageText returns an empty string...

Hello,

We are using Delphi 5 and QuickPDF v. 5.22.

When we run the code below, on most 'pdf,' we do get the correct result in the 'iText' variable. But we have a few 'pdf' [not created with PrimoPDF] for which a call to 'GetPageText' always returns an empty string even though it should not [the underlying text can be viewed when the file is opened with PrimoPDF].

We have tried the latest version of QuickPDF (as a demo). The results are the same.

Does anybody may have an idea of what the problem might be?


// Let's 'create' the component used to read the 'pdf' file
iPDFSource:= TQuickPDF.Create(Self);
try
    // Let's unlock the access to the component's properties
    iPDFSource.UnlockKey('xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx');
    iPDFSource.LoadFromFile(aPDFFileName);
    // Let's decrypt the 'pdf' file if it is encrypted
    if (iPDFSource.Encrypted > 0) then
      iPDFSource.Unencrypt;
    // Let's determine the number of pages found within the 'pdf' file
    iNbPages := iPDFSource.PageCount();
    // If the file is not empty,
    if (iNbPages > 0) then begin
      // let's read the content of the 'pdf' file
      for iCpt := 1 to iNbPages do begin
        Application.ProcessMessages;
        iPDFSource.SelectPage(iCpt);
        iPDFSource.CombineLayers;
        iText := iPDFSource.GetPageText(0);
        if (Trim(iText) <> '') then
          ShowMessage(iText);
      end;
    end;
finally
    // Let's dispose of our 'pdf' reader
    iPDFSource.Free;
end;

Thanks for the tip.

I tried it but GetPageText still returns only empty strings.

Hello,

I posted the file for download at the following url: click here.

Nevertheless, I don't know if it worth spending any time working on it since I just found out that our customer would like us to change one of the font used within the 'pdf.' As far as I understand, that is not possible with QuickPDF.

I have tried this file here too and I'm also not able to extract text. Using v7.16 and Delphi 2009.

This here is only a user-user-forum so please send your code and file to this location:

I understood that, but since you (as user) could extract text from the provided file I just wondered how you did that while it doesn't work for at least two other users ("jdupond" and "AIM")? Since you didn't have a problem with that file, did it work with the code from "jdupond", or have you used another code? A tip from a user with success to users without success would be highly appreciated! :)

Thanks for clarification, Ingo.